In my local machine cron works right, the problem started to happen when I uploaded cron to the test server. It was installed well on this one, the service started correctly, but then began to happen this trouble.

I have tested it's not problem of permissions, anyone has access to the file C:\Test.exe, also I have tried to change the log on user for cron service to Admin user, but it doesn't work too.

A question that I have is nnCronn has marked the task in the taskinfo.txt as it had been executed, when this is not correct as the execution crashed on the middle of the process. Due to it, even the task in the cron.tab file is marked with @ symbol this is not executed anymore. I mean, nnCron is not able to detect that task was not finished right wherefore it doesn't try to execute again.